Home / 13,423.29-18,521.19-8,117.99

Finding the Fourth Proportional to 13,423.29, 18,521.19 and 8,117.99

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Solution

The fourth proportional to 13,423.29, 18,521.19 and 8,117.99 is: 11,201.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,423.29 : 18,521.19 = 8,117.99 : x
  2. Step 2: Convert to fraction form
    13,423.29/18,521.19 = 8,117.99/x
  3. Step 3: Cross multiply
    13,423.29x = 18,521.19 × 8,117.99
  4. Step 4: Simplify right side
    13,423.29x = 150,354,812.06
  5. Step 5: Solve for x
    x = 150,354,812.06/13,423.29
  6. Step 6: Final answer
    x = 11,201.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.